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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_WEB_DRAG_SOURCE_H__
#define CHROME_BROWSER_WEB_DRAG_SOURCE_H__
#include "base/base_drag_source.h"
#include "base/basictypes.h"
class RenderViewHost;
///////////////////////////////////////////////////////////////////////////////
//
// WebDragSource
//
// An IDropSource implementation for a WebContents. Handles notifications sent
// by an active drag-drop operation as the user mouses over other drop targets
// on their system. This object tells Windows whether or not the drag should
// continue, and supplies the appropriate cursors.
//
class WebDragSource : public BaseDragSource {
public:
// Create a new DragSource for a given HWND and RenderViewHost.
WebDragSource(HWND source_hwnd, RenderViewHost* render_view_host);
virtual ~WebDragSource() { }
protected:
// BaseDragSource
virtual void OnDragSourceDrop();
virtual void OnDragSourceMove();
private:
// Cannot construct thusly.
WebDragSource();
// Keep a reference to the HWND so we can translate the cursor position.
HWND source_hwnd_;
// We use this as a channel to the renderer to tell it about various drag
// drop events that it needs to know about (such as when a drag operation it
// initiated terminates).
RenderViewHost* render_view_host_;
DISALLOW_EVIL_CONSTRUCTORS(WebDragSource);
};
#endif // #ifndef CHROME_BROWSER_WEB_DRAG_SOURCE_H__
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